Felony gearing with Castle 1717 1650KV?

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Felony gearing with Castle 1717 1650KV?

sadmancho

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I want to put in the Castle 1717 1650KV motor and esc in my Arrma Felony and run it on 8s. I am looking to do high speed runs (90 mph+) along with drifting. What gearing should I go with that won’t overheat my system?
 

jkflow

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Can't have it both ways, constant speed gear and no overheating while bashing will not happen.
Not sure anymore what the largest pinion is that will fit but you need to be in the 30-34T range. I believe the mount tops out at 28T/50T

You are probably better off going to a 46T spur and 28T or in that range. That is for speed, for bashing it's probably 20-22T/46T
 

sadmancho

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Can't have it both ways, constant speed gear and no overheating while bashing will not happen.
Not sure anymore what the largest pinion is that will fit but you need to be in the 30-34T range. I believe the mount tops out at 28T/50T

You are probably better off going to a 46T spur and 28T or in that range. That is for speed, for bashing it's probably 20-22T/46T
Thanks for the reply, do you think I would be fine with 25t pinion and 46t spur?
Can't have it both ways, constant speed gear and no overheating while bashing will not happen.
Not sure anymore what the largest pinion is that will fit but you need to be in the 30-34T range. I believe the mount tops out at 28T/50T

You are probably better off going to a 46T spur and 28T or in that range. That is for speed, for bashing it's probably 20-22T/46T
Thanks for the reply. Do you think I would be good with a 25t pinion and 46t spur?
 

jkflow

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For bashing? No, it's too much but by all means check your temps on the motor.

Rough calculation, stock motor 2050kv, yours 1650kv = 0.8 ratio
25/50 (speed gear stock) = 0.5
25/46 = 0.54*.8 = 0.43 or roughly a 22T pinion under stock.

Highest I bash with is an 18T and I have upgraded fans on stock motor.

18/50 = 0.36 or roughly 20T/46T for the Castle motor.

I'm sure there is a calculator for this somewhere but it's in the ballpark.


https://scriptasylum.com/rc_speed/top_speed.html
 
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